elene@25: #version 120
elene@25: 
elene@25: varying vec3 pt;
elene@25: 
elene@25: void main()
elene@25: {
elene@25: 	mat4 mvbb = gl_ModelViewMatrix;
elene@25: 
elene@25: 	mvbb[0][0] = mvbb[1][1] = mvbb[2][2] = 1.0;
elene@25: 	mvbb[0][1] = mvbb[0][2] = mvbb[1][2] = 0.0;
elene@25: 	mvbb[1][0] = mvbb[2][0] = mvbb[2][1] = 0.0;
elene@25: 	
elene@25: 	gl_Position = gl_ProjectionMatrix * mvbb * gl_Vertex;
elene@25: 
elene@25: 	pt = (transpose(gl_NormalMatrix) * gl_Vertex.xyz) * 0.5 + 0.5;
elene@25: }